Galvanic cell.



H. A. STOFFLET.

GALVANIC CELL.

APPLICATION FILED NOV-22, 19m.

1 ,285,83 1. Patented Nov. 26, 1918.

l I I WI/M/MZI/JM HOWARD A. STOFFLET, OF READING, PENNSYLVANIA.

GALVANIC CELL.

Specification of Letters Patent.

Patented Nov. 2c, 1918.

Application filed November 22, 1916. Serial No. 132,901.

To all whom it may concern:

Be it known that I, HOWARD A. Srormr, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Galvanic Cells, of which the following is a specificatlon.

My invention relates particularly to galvanic cells for primary batteries; and 11; consists in providing in connection wlth an element receptacle, which is preferably independently removable from the acket, an nclosing receptacle through which and its contents the electrolytic liquid passes to said element, as described in connection wlth the accompanying drawings and defined 1n the subjoined claims.

Figure 1 is a side elevatlon of a cell embodying my complete inventlon 1n preferred form, the jacket being shown in cross-section on the line l'1 of Fig. 2; and dotted hues indicating a partially withdrawn posltlon of the independently removable receptacle.

Fig. 2 is a ross-sectional view on the line' 22 of Fig. l, the partially withdrawn position of the independently removable receptacle being again indicated by dotted hnes.

Fig. 3 is a sectional plan view on the line 33 of Fig. 2.

Fig. 4 is a sectional erspective view of the independently remova le receptacle.

Figs. 5 and 6 indicate a modified construction, Fig. 5 being a horizontal section on the line 5-5 of Fig. 6, and F ig.- 6 a sectional view on the line 6-6 of Fig. 5.

Figs. 1 to 4 illustrate a jacket or ar 7 of rectangular form, while Figs. 5 and 6 show a cylindrical jacket 7 the parts contained therein being shown correspondingly varied in shape. Figs. 1 to 4 onl show the preferred construction, in which the central receptacle is adapted for convenient removal to permit of independently renewing its contained element.

The use of a comminuted depolarizing element greatly increases the galvanic action, and the main purpose of my invention is to provide for satisfactorily employing an element in such form. To this end I provide a central receptacle Shaving perforate walls 9, for the comminuted materlal, in connection with an inclosing receptacle 10 having perforate walls, for a suitable interceptin material, the latter being adapted to permit the passage of the electrolytic liquid therethrough to the comminuted element while at the same time serving to practically retain the latter in its receptacle. I preferably fill this receptacle 8 with powdered black cop receptacle 10 with which materials I 'rately formed and independently insertible through a cover-plate aperture 20 having a removable cap 21.

As shown, the receptacle 8 has the shape of a deep rectangular box, is formed of finel perforated sheet metal, and open at the top for filling in or emptying the comminuted material. The inclosing receptacle 10 is likewise formed mainly of perforated sheet metal; with duplicate compartments, 25, 25, of rectangular cross-section, each having (see Fig. 3) an inner erforate wall 26 and an outer perforate wal 27 spaced apart by vertical wall-bars 28, 28, and said compartments being spaced apart by similar wallbars 29, 29 to form between them a central compartment into which the receptacle 8 is removably inserted. The zinc plates 16, 16, are, as indicated, carried by insulating brackets 31, 31, 31, 31, on the outer walls of the receptacle 10, while the latter is fixed to depending brackets 32, 32 on the cover plate.

The electrolytic liquid','as caustic soda or potash, comes into contact with the com' minuted copper oxid or equivalent material in the central receptacle 8, by passing through the intercepting material in the inclosing receptacle 10; the term intercepting being employed to define the essential func; tion of said inclosing material, namely the retaining of the comminuted material in receptacle 8 while at the same time permitting the energetic galvanic action incident to its comminuted form. Renewal of this comminuted material is most conveniently provided for by means of the independently removable receptacle 8, as described, and the general construction is simple and economical. In the modification shown in Figs. 5 and 6, previously referred to, the main feasatisfactorily for the tures of my invention are retained, the receptacle 8 however being rigidly combined with the inclosing receptacle 10 and removable with the latter through the cover plate aperture, but without disturbing the zinc-element connections.

What I claim is 1. In a galvanic cell employing an electrolytic liquid and a comminuted element; a separately insertible and removable receptacle for the latter having perforate walls, and a relatively fixed inclosure for said inserted receptacle having Walls impermeable by said comminuted element but permeable i by the electrolytic liquid.

2. In a galvanic cell employin an elec trolytic liquid and a comminuted e ement; a separatel insertible and removable receptacle for the latter having perforate walls, and a relatively fixed inclosure for said inserted receptacle having. double perforate walls forming an inclosing receptacle; the latter containing an intercepting material adapted to retain the comminuted element and to permit passage of the electrolytic liquid thereto.

3. A galvanic cell comprising a jacket having a cover plate provided with a central aperture, an outer elementand an inclosing receptacle fixed to said cover plate, and a separate central receptacle insertible through said aperture; the walls of both said receptacles being perforate to permit passage of the electrolytic fluid through said inclosing receptacle into said central receptacle.

4:. A galvanic cell comprising a jacket having a cover plate provided with an aperture, an outer-element carried by said cover plate, and a central-element receptacle inclosed by a receptacle for intercepting-material also carried by said cover plate; said central-element receptacle being removable through said aperture without disturbing said outerelement.

In testimony whereof I aflix my signature.

HQWARD A. STOFFLET. 

